| // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| /// @assertion void Function(T) bindUnaryCallbackGuarded<T>( |
| /// void callback(T argument) |
| /// ) |
| /// Registers the provided callback and returns a function that will execute |
| /// in this zone. |
| /// When the function executes, errors are caught and treated as uncaught |
| /// errors. |
| /// Equivalent to: |
| /// ZoneCallback registered = this.registerUnaryCallback(callback); |
| /// return (arg) => this.runUnaryGuarded(registered, arg); |
| /// @description Checks that synchronous [callback] errors are caught in zone. |
| /// @author a.semenov@unipro.ru |
| |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| int handlerCallCount = 0; |
| var caughtError = null; |
| |
| void handler(Zone self, ZoneDelegate parent, Zone zone, e, st) { |
| handlerCallCount++; |
| caughtError = e; |
| } |
| |
| Zone zone = Zone.current.fork( |
| specification: new ZoneSpecification( |
| handleUncaughtError: handler |
| ) |
| ); |
| |
| void callback(int x) { |
| Expect.equals(1, x); |
| throw "callback error"; |
| } |
| |
| void Function(int) boundCallback = |
| zone.bindUnaryCallbackGuarded<int>(callback); |
| boundCallback(1); |
| Expect.equals(1, handlerCallCount); |
| Expect.equals("callback error", caughtError); |
| } |